Brook's book is centered around Mr. March, the father in "Little Women" who is notably absent from that novel as he is away engaged in something or other during the Civil War. Since Alcott modeled the characters in "Little Women" after herself and her sisters, Brooks utilized Alcott's father as the foundation for her creation of Mr. March. Alcott's father was a radical progressive and an abolitionist, with the latter being a major theme in this book.
"March" is a beautifully penned book, and March the man is an extraordinary human. He is kind, intelligent, and hardworking. March has a strong moral core and leaves his family to preach God's word during the Civil War. I found March to be a wonderful character and was truly enjoying the story. However, unfortunately, the story took a wrong turn for me when it switched from Mr. March's perspective to Mrs. March's perspective. I don't want to disclose the reason due to spoilers, but suffice it to say that Mrs. March's view of her husband didn't align with the character that had been established for most of the book, making her perspective seem completely senseless in my opinion. Coupled with Mr. March's transformation from arguably a hero to a martyr or someone suffering from self-pity, well, I was left wondering if I was still reading the same book about two-thirds of the way through.
Even so, I would still recommend this book because of the excellent writing and the creativity Brooks demonstrated with the March character she had crafted. She also included some great sections about Emerson and Thoreau, some of which were taken verbatim from Alcott's father's journals. There's also a great bit about John Harper in the book. Thus, from a historical fiction standpoint, Brooks did an outstanding job, making this book overall a very enjoyable read.